Find and fix API performance bottlenecks.

Master skill for TypeScript backend development. Decision framework for APIs (tRPC/REST), authentication (Auth.js/Passport), database (Prisma), validation (Zod), logging (Pino), testing (Vitest), and deployment (Docker). Routes to specialized skills for implementation. Use as entry point for any backend task.

Create and manage database migrations with reversible changes, proper naming conventions, and zero-downtime deployment strategies. Use this skill when creating database migration files, modifying schema, adding or removing tables/columns, managing indexes, or handling data migrations. Apply when working with migration files (e.g., db/migrate/, migrations/, alembic/, sequelize migrations), schema changes, database versioning, rollback implementations, or when you need to ensure backwards compatibility during deployments. Use for any task involving database structure changes, index creation, constraint modifications, or data transformation scripts.

Use when designing or reviewing a backend MVP with tight budget, evolving schema, and reliance on third-party backends where idempotency, replay, and responsibility attribution are high-risk.

High-performance structured JSON logging for Node.js. Use when building production APIs that need fast, structured logs for observability platforms (Datadog, ELK, CloudWatch). Provides request logging middleware, child loggers for context, and sensitive data redaction. Choose Pino over console.log for any production TypeScript backend.

Implement comprehensive testing strategies with pytest, fixtures, mocking, and test-driven development for FastAPI applications. Use when writing Python tests, setting up test suites, or implementing testing best practices.

backend-python

Runs formatting, linting, and tests for the backend.

Expert in secure backend coding practices specializing in input

Backend TDD Agent. Node.js/NestJS 기반 TDD 테스트 작성 및 구현을 담당합니다. 테스트 먼저 작성 후 구현하는 Red-Green-Refactor 사이클을 따릅니다.

Use when generating tests for backend code (Express routes, MongoDB models, Node services) - analyzes file type, detects test framework from package.json, generates comprehensive tests with setup/teardown and edge case coverage

Generate comprehensive backend tests with Jest/Vitest including fixtures and mocks.

Run isolated test environments for backend changes, manage test data, and verify API endpoints. Use when testing Python backend changes without interfering with production instances.

Backfill missing GitHub streak dates using the streakify.sh script. Use this when the user asks to backfill dates, fix missing streak days, or catch up on streak commits.

Expert backlog manager that prioritizes work using multi-criteria scoring, analyzes dependencies, and recommends optimal next tasks. Activates when managing backlogs, prioritizing work, adding items, or analyzing what to work on next.

Use this skill when creating or editing issues on Github or when asked to write user-stories or record bugs.

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Bulk backlog scanner that analyzes the entire finans codebase vs CLAUDE.md, identifies ALL gaps, and generates a comprehensive, prioritized, numbered task backlog. Uses broad→narrow pattern.

Manage data flow when producers outpace consumers. Bounded buffers, adaptive flushing, and graceful degradation prevent OOM crashes and data loss.

Build Backstage backend plugins with createBackendPlugin and core services: DI, httpRouter, secure-by-default auth, Knex DB, routes, testing. Use for APIs and background jobs.

Build Backstage frontend plugins with the new Frontend System: createFrontendPlugin, blueprints, routes, Utility APIs, testing. Use for pages, nav, entity content, or cards.

Generate enterprise-grade web applications using Backstage Design System. Create admin dashboards, developer tools, and internal applications with modern React components, dark/light themes, and responsive design patterns based on Radix UI and Tailwind CSS.

Critical fix for backtest capital accounting when equity curves are inflated or drawdown metrics are meaningless

Comprehensive guidance for interpreting backtest results and detecting overfitting (project)

Phylax Credible Layer assertions backtesting. Runs assertion backtests against historical transactions. Use when validating phylax/credible layer assertions on real chain data or known exploits.

Multi-agent workflow for editing Claude Code skills with quality gates

MicroPython REPL usage, package management, module inspection, and interactive debugging for Universe 2025 (Tufty) Badge. Use when installing MicroPython packages, testing code interactively, checking installed modules, or using the REPL for development.

Create MicroPython applications for Universe 2025 (Tufty) Badge including display graphics, button handling, and MonaOS app structure. Use when building badge apps, creating interactive displays, or developing MicroPython programs.

Generates production-ready BAML applications from natural language requirements. Creates complete type definitions, functions, clients, tests, and framework integrations for data extraction, classification, RAG, and agent workflows. Queries official BoundaryML repositories via MCP for real-time patterns. Supports multimodal inputs (images, audio), 6 programming languages (Python, TypeScript, Ruby, Java, Go, C#), 10+ frameworks, 50-70% token optimization, and 95%+ compilation success.

Manage BAP (Bitcoin Attestation Protocol) identity files using bap-cli. This skill should be used when users need to create, decrypt, list, or extract BAP identity backups, work with .bep encrypted files, or generate test fixtures for Playwright tests involving BAP identities.

Specialized agent for BarqNet backend development. Focuses on Go backend API development, PostgreSQL database management, authentication systems, JWT tokens, OpenVPN integration, and production-ready backend architecture. Use this skill when working on server-side code, API endpoints, database migrations, or backend infrastructure.

You are an expert in barrel file generation and TypeScript/React project organization using barrel-craft. You excel at creating clean, maintainable import structures and automated barrel file generati

Use when starting a fine-tuning project to determine if fine-tuning is needed, or when evaluating whether a base model meets quality thresholds for a specific domain task

MUI Base UI unstyled React components with Floating UI. Use for accessible components, Radix UI migration, render props API, or encountering positioning, popup, v1.0 beta issues.

Base UI reference and workflows for @base-ui/react (unstyled, accessible React components, composition utilities, and form helpers). Use when implementing Base UI components, portals, styling/state hooks, render-prop composition, eventDetails customization, animations, forms/validation, TypeScript typing, CSP/RTL utilities, or checking Base UI docs, issues, or releases.

Autonomously run quality checks (detekt, Gradle tests) to establish baseline or detect regressions. Supports three modes (capture, compare, auto) for comprehensive regression detection. Triggers before starting development work, after completing changes, when checking code quality, or when explicitly requested. Compares current metrics against previous baseline to identify improvements or regressions in code quality and test coverage.

Write, debug, and optimize bash scripts and CLI solutions for macOS using modern tools (fd, rg, sd, jq) with shellcheck compliance. Use when creating shell scripts, one-liners, pipelines, automation, or solving complex CLI tasks.

Write Bash scripts following best practices. Use when creating shell scripts, automation, or CLI tools. Covers safe scripting patterns.

Shellcheck and shfmt integration for bash script quality assurance.

Expert bash/shell scripting system across ALL platforms. PROACTIVELY activate for: (1) ANY bash/shell script task, (2) System automation, (3) DevOps/CI/CD scripts, (4) Build/deployment automation, (5) Script review/debugging, (6) Converting commands to scripts. Provides: Google Shell Style Guide compliance, ShellCheck validation, cross-platform compatibility (Linux/macOS/Windows/containers), POSIX compliance, security hardening, error handling, performance optimization, testing with BATS, and production-ready patterns. Ensures professional-grade, secure, portable scripts every time.

Analyze and optimize bash scripts according to strict standards: performance, modern tooling, consolidation patterns.

Master of defensive Bash scripting for production automation, CI/CD

Expert helper for bash scripting, debugging, and best practices

Testing frameworks and patterns for shell scripts, focusing on shunit2 and shellspec.

You are an expert in defensive Bash scripting for production environments. Create safe, portable, and testable shell scripts following modern best practices.

Use when getting started with llmemory document storage and search - covers installation, initialization, adding documents, vector search, hybrid search, semantic search, BM25 full-text search, document management, and building RAG systems with multi-tenant support

This skill should be used when setting up, managing, or troubleshooting Basilica GPU miner operations on Bittensor Subnet 39 (mainnet) or 387 (testnet). Use it for GPU provider tasks including SSH configuration, validator authentication setup, node registration, performance monitoring, uptime optimization, and resolving common issues like SSH access problems, validator discovery failures, or GPU validation errors. Critical for miners struggling with SSH key deployment to GPU nodes or validator connectivity.

Batch convert multiple CAD/BIM files (Revit, IFC, DWG, DGN) with progress tracking, error handling, and consolidated reporting.

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